McDonnell Miller Discontinues 150E Series

Due to difficulties in obtaining some machined components and because of declining sales, the M&M Series 150E Low Water Cut-Off and all its variants are being discontinued as of December 31, 2009. This will impact the 150E, 1507E, and replacement heads for those products.

M&M recommends the Series 150S float style Low Water Cut-Off as a direct replacement for the 150E and the new 1575 as an alternative for clients that wish to continue using a probe-style device.

From a replacement parts perspective, the 150S replacement head will bolt directly to an existing 150E body. Some minor wiring modifications may be required, and the user should be aware that the time delays and the pump differential are not adjustable on the 150S.  Keep in mind that it is also good practice to use a relay between the 1501S and the boiler feed pump.

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